On Jan 31, 2011, at 8:58 AM, Les Mikesell <lesmikes...@gmail.com> wrote:
> On 1/31/11 3:20 AM, carlopmart wrote: >> On 01/31/2011 04:05 AM, James A. Peltier wrote: >>> ----- Original Message -----> |>> >>> |> >>> |> Correct. >>> | >>> | But I don't see how any of those things apply here. If the host fails >>> | your vm's >>> | are going to fail in any case, and there's not much magic involved in >>> | exporting >>> | an NFS share even if you need to move it. Iscsi targets are slightly >>> | more >>> | complicated because it's not included in the base Centos install but >>> | you can >>> | find howto's to set it up. When your resources are limited it looks >>> | like a big >>> | waste to add an unnecessary virtual layer to storage. I've done it the >>> | other >>> | way around, though, with NFS exports from the host being mounted by >>> | the guest VM's. >>> | >>> | -- >>> | Les Mikesell >>> | lesmikes...@gmail.com >>> >>> I made no claims that it solved anything. I merely noted why someone might >>> want to virtualize in place of NFS. Personally, I don't think that the OP >>> really knows what they want, or they want the best of all worlds without >>> compromise. I don't see how it is possible to provide what is being asked >>> for. Really I think a minimum of two ideally a third server providing >>> iSCSI or NFS is needed for the solution to work. That third machine should >>> have all of the possible host level redundancy possible to keep it running. >>> If H/A is required at least two machines are required. >>> >> >> Ok I will try to explain with more details. First, this installation it is >> for my >> home personal use, It isn't for a production environment 24x7 or similar. >> >> I have two physical hosts with this configuration: >> >> HostA: >> >> - HP ML150 >> - 5GB RAM >> - 3TB for storage with HP smartArray E200i >> - Intel Xeon QuadCore. >> >> HostB: >> >> - HP ML115 G5 >> - 8GB RAM >> - 160GB for storage >> - AMD QuadCore >> >> Ok, lets go. I need (or I will like to do) to setup several virtual machines >> to >> accomplish different tasks (remeber, It is for personal use, like a lab >> environment): >> >> - 1 virtual machine using as a DNS server and Kerberos authentication >> (CentOS or >> RedHat) >> - 2 virtual machines with RHCS installed providing several services: smtp >> server >> (only smtp), mirror updates, squid and cifs server. (with CentOS5) >> - 1 virtual machine with Windows 7 as a workstation. >> - 1 virtual machine with Windows 2008 R2 server. >> - 2 virtual machines with RHCS installed with OSSEC. Snort. Snortby and >> Splunk >> server (with CentOS5 too) >> - 2 virtual machines with OpenBSD firewalls with CARP and load balancing. >> - 1 virtual machine as a DMZ Server. >> >> My idea is to install DNS server (with kerberos auth) and 2 virtual virtual >> machines >> with RHCS and common services linke smtp, squid, etc onto HP ML150. And the >> others >> virtual machines running on HP ML115 server. >> >> Where is the problem?? Problem is the storage. All storage resides on the HP >> ML150 >> server. For that reason I need to install a server as a virtual storage to >> run most >> of the virtual machines running on the server HP ML115 with the exception of >> firewalls and the DMZ server that resides on the HP ML115's local disk. >> >> For backups I have an external usb disk with 1TB. > > You can probably make that work if you don't care much about performance, but > it > would be much better to toss at least one more drive in the the ML115 - and > maybe more RAM in both. Even better if you can add several drives and keep > each > VM that is active (the firewalls/DNS server, etc. shouldn't be busy but the > squid will unless you disable the disk cache) on its own drive. And more RAM > would help too. I would probably take the memory from the 115 and put it in the 150 and have 1 highly usable system instead of a .75 and .50 usable system. That's if I couldn't buy more memory. I would say 8GB is a min, 16GB preferred, 32GB is great. Are these single socket or dual socket? Can the smart array be shared between two hosts? -Ross _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
